ScienceDaily (Oct. 11, 2012) Researchers at Dana-Farber Cancer Institute have developed a novel method for determining how ready acute myeloid leukemia (AML) cells are to die, a discovery that may help cancer specialists to choose treatments option more effectively for their patients who have AML.

In a study published in the Oct. 12 issue of the journal Cell, the researchers report that their findings may lead to improved tests to predict which patients successfully treated for AML can continue in remission with standard chemotherapy alone, and which patients are likely to relapse despite additional treatment, but might benefit from a bone marrow transplant.

Anthony Letai, MD, PhD, senior author of the paper, said the study's results also help to explain the "therapeutic index" of AML chemo drugs: That is, how a patient's normal blood-forming stem cells can survive chemotherapy doses that kill the leukemia cells. Unlike current predictive tools, the new method determines the degree to which an individual patient's AML cells are "primed to die" by apoptosis, or programmed cell death. Chemotherapy is more effective when the cancer cells are well along the path to self-destruction, while patients with less-primed leukemia cells are more likely to suffer fatal relapse without a bone marrow transplant, said the researchers.

"Our data suggest that applying our assay in addition to conventional indicators yields a much better predictive tool," said Letai. "We plan to confirm this in independent experiments, and then test its performance prospectively in clinical trials to see if we can use it to do a better job of assigning individualized therapy in AML."

According to the American Cancer Society, an estimated 13,780 cases of AML will be diagnosed in the United States this year, and more than 10,000 people are expected to die from AML, making it the most lethal form of leukemia in the U.S.

Currently, clinicians try to predict an AML patient's outcome by assessing the cancer cells' pathological features and whether the cells contain certain mutations that suggest a poorer response. But these indicators do not provide a biological explanation for patients' differing responses to treatment, noted Letai.

The method described in the new study takes a different approach, first described by Letai in 2011 paper. It employs a technique called "BH3 profiling" to measure the readiness of mitochondria -- tiny organelles within the cell -- to unleash chemical compounds that cause the cell to destroy itself. The self-destruction process, called apoptosis, is triggered by "death molecules," whose mission is to eliminate unneeded or dangerously damaged cells from the body. The study's authors called this readiness for apoptotic self-destruction "mitochondrial priming."

BH3 profiling involves exposing cancer cells to BH3 molecules, which mimic the protein death signals in the body. If the cancer cells' mitochondria membrane is rapidly and easily disrupted, then the cells are considered to be highly primed for death. If the mitochondria strongly resist the disruption, the leukemia cells are further from self-destruction and less likely to respond to chemotherapy.

Applying the method to stored AML patient samples, "We found that mitochondrial priming measured by BH3 profiling was a determinant of initial response to induction [initial] chemotherapy, relapse following remission, and requirement for allogeneic bone marrow transplantation," the authors wrote.

Moreover, knowing whether a patient is likely to have a complete response to chemotherapy would be also very useful in personalizing chemotherapy decisions even when bone marrow transplant is not a consideration. "In elderly patients with AML, chemotherapy can be very toxic with an increased risk of fatal complications," said Letai. "You don't want to give chemotherapy unless you know whether it will benefit. Now we can predict who will benefit from it and who won't -- and should receive an alternative treatment."

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New tool determines leukemia cells' 'readiness to die,' may guide clinical care

Robin Roberts has returned home from the hospital, following a bone marrow transplant she received with stem cells from her sister last month.

"There's no place like home. After 30 days in the hospital I'm home," Roberts Tweeted on October 11. "Praise God from whom all blessings flow. Thank YOU and bless YOU."

The 51-year-old "Good Morning America" anchor was being treated for myelodysplastic syndrome (MDS), a rare blood and bone marrow disorder. Roberts revealed her ailment in June, saying it was caused in part by treatments she had undergone for breast cancer five years ago. Her older sister, Sally-Ann, was her bone marrow donor.

Check out 9 facts about Robin Roberts, her MDS and bone marrow transplant.

Roberts went on medical leave a day early than she had initially planned in late August in order to visit her ailing mother, Lucimarian Tolliver Roberts. Lucimarian died on August 30 at the age of 88 and Robin Roberts made it back just in time to see her mother.

In the recent blog post, Roberts detailed her difficulties with chemotherapy and how her co-workers' visit helped lift her spirits.

"Today is what I like to call 'Thankful Thursday, aka Friday Eve,'" Roberts wrote in a post on October 4. "I have been in the hospital 25 days now. My bone marrow transplant took place exactly two weeks ago. The only numbers that matter are my blood counts and they are... GREAT! My sister Sally-Ann's stem cells apparently feel right at home in my body -- an answer to so many prayers."

"My doctors and rock star nurses are very pleased with my progress and I could not be more thankful for the excellent care I am receiving," she added. "I have had some extremely painful days and it's still difficult for me to eat because of all the chemo."

Roberts also mentioned a visit she had with fellow "Good Morning America" co-workers Josh Elliott and Sam Champion, which can be seen in the photo above, as well as an upcoming visit from a childhood pastor.

"I continue to learn so much on this journey, especially when it comes to true friendship and love. My friends near and far -- like Sam and Josh who came to visit yesterday -- have been lifting my spirits," Roberts wrote. "My childhood pastor (who delivered Momma's eulogy) is coming from down South to see me tomorrow. I am hopeful that I MAY be well enough to continue my recovery at home next week and my sisters plan to come back to NYC for that milestone in my journey."

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Robin Roberts returns home from hospital following bone marrow transplant

ScienceDaily (Oct. 11, 2012) The generation of functional thyroid tissue from stem cells could allow the treatment of patients, which suffer from thyroid hormone deficiency due to defective function, or abnormal development of the thyroid gland. The team of Sabine Costagliola at the IRIBHM (Universit Libre de Bruxelles) recently developed a protocol that allowed for the first time the efficient generation of functional thyroid tissue from stem cells in mice and published the results of their studies in the scientific journal Nature.

Thyroid hormones are a class of iodide-containing molecules that play a critical role in the regulation of various body function including growth, metabolism and heart function and that are crucial for normal brain development. The thyroid gland, an endocrine organ that has been specialized in trapping iodide, is the only organ where these hormones are produced. It is, however, of note that one out of 3000 human newborns is born with congenital hypothyroidism, a condition characterized by insufficient production of thyroid hormones. In the absence of a medical treatment with thyroid hormones -- initiated during the first days after birth -- the child will be affected by an irreversible mental retardation. Moreover, a life-long hormonal treatment is necessary in order to maintain proper regulation of growth and general metabolism.

By employing a protocol in which two important genes can be transiently induced in undifferentiated stem cells, the researchers at IRIBHM were able to efficiently push the differentiation of stem cells into thyrocytes, the primary cell type responsible for thyroid hormone production in the thyroid gland.

A first exciting finding of these studies was the development of functional thyroid tissue already within the culture dishes. As a next step, the team of Sabine Costagliola transplanted the stem-cell-derived thyrocytes into mice lacking a functional thyroid gland. Four weeks after transplantation, the researchers observed that transplanted mice had re-established normal levels of thyroid hormones in their blood and were rescued from the symptoms associated with thyroid hormone deficiency. These findings have several important implications. First, the cell system employed by the IRIBHM group provides a vital tool to better characterize the molecular processes associated with embryonic thyroid development. Second, the results of the transplantation studies open new avenues for the treatment of thyroid hormone deficiency but also for the replacement of thyroid tissue in patients suffering from thyroid cancer.

The researchers are currently developing a similar protocol based on human stem cells and explore ways to generate functional human thyroid tissue by reprogramming pluripotent stem cells (iPS) derived from skin cells.

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Generation of functional thyroid tissue from stem cells

Friday, Oct. 12, 2012

Stem cells derived from a mouse's skin won Shinya Yamanaka the Nobel Prize in physiology or medicine on Monday. Now researchers in Japan are seeking to use his pioneering technology for an even greater prize: restoring sight.

Scientists at the Riken Center for Developmental Biology in Kobe plan to use induced pluripotent stem (iPS) cells in a human trial using patients with macular degeneration, a disease in which the retina becomes damaged and results in loss of vision, Yamanaka, a Kyoto University professor, told reporters the same day in San Francisco.

Companies including Pfizer Inc. are already planning trials of stem cells derived from human embryos, but Riken's will be the first to use a technology that mimics the power of embryonic cells while avoiding the ethical controversy that accompanies them.

"The work in that area looks very encouraging," John B. Gurdon, 79, a professor at the University of Cambridge who shared this year's Nobel Prize with Yamanaka, said in an interview in London.

Yamanaka and Gurdon split the 8 million Swedish kronor (about 94 million) award for experiments 50 years apart demonstrating that mature cells in latent form retain all of the DNA they had as immature stem cells, and that they can be returned to that potent state.

Their findings offer the potential for a new generation of therapies against hard-to-treat diseases like macular degeneration.

In a study published in 1962, Gurdon took a cell from a tadpole's gut, extracted the nucleus and inserted it into the egg cell of an adult frog whose own nucleus had been removed. The reprogrammed egg cell developed into a tadpole with the genetic characteristics of the original tadpole, and subsequent trials yielded adult frogs.

Yamanaka, 50, built on Gurdon's work by adding four genes to a skin cell from a mouse, returning it to its immature state as a stem cell with the potential to become any cell in the body.

He dubbed them induced pluripotent stem cells.

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Riken to test iPS cells in human trial

Joey Duffy of Springettsbury Township is looking for a match.

Two-year-old Joey Duffy yawns as his mother, Maura, vents his stomach via a feeding tube after he was fed at their Springettsbury Township home on Friday. Joey, who has previously had esophageal stricture, has been in and out of the hospital all summer and is in need of a bone marrow transplant. (DAILY RECORD/SUNDAY NEWS - CHRIS DUNN)

Two-year-old Joey Duffy played with his "Sesame Street" doll Ernie, watched the television show "Yo Gabba Gabba" and occasionally called out "mamma" while his parents talked about a bone marrow transplant he needs.

The toddler was diagnosed about five weeks ago with Myelodysplastic Syndromes, also known as MDS, a blood and bone marrow disorder. It's the same ailment that Robin Roberts of "Good Morning America" is receiving treatment for currently.

The disease can progress to leukemia, parents Tom and Maura Duffy said at their Springettsbury Township home. They are lucky that doctors at Johns Hopkins in Baltimore caught the condition when they did for their youngest son.

"We're ahead of the game," Maura Duffy said. "We caught this very early."

The only cure is a bone marrow transplant, and the parents as well as their two older sons, 5-year-old Tommy and 4-year-old Mick, have already submitted a cheek swab to see if they will be a match for Joey. His brothers are the best chance, Maura Duffy said.

Meanwhile, the family is organizing an Oct. 21 donor drive at their church, Saint Andrews Episcopal Church in Spring Garden Township. The idea came about as family and friends asked how they could get tested to see if they are a match, Tom Duffy said.

The process only takes about 15 minutes, said Sarah Brooks Horan, an account executive for the National Marrow Donor Program, also known as "Be The Match." A cotton swab is used to swab the cheek.

These days, donating stem cells can be as simple as giving blood, Horan said.

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Springettsbury toddler needs a bone marrow transplant

ST. LOUIS Local cancer patients who need bone marrow transplants could soon have the option of sleeping in their own beds instead of staying in the hospital for weeks or months.

The region's first outpatient bone marrow transplant center is set to open later this month at St. Louis University Hospital.

Bone marrow transplants are most commonly used for certain patients with cancers of the blood including leukemia and lymphoma. Stem cells from bone marrow harvested from the patient or a donor are transplanted into the patient's bloodstream to replace diseased cells. Patients require chemotherapy before the transplant to kill the cancer cells, and antibiotics, blood transfusions and daily monitoring afterward.

Historically, patients were hospitalized up to two months or longer because side effects from the transplant can be life-threatening. In an effort to reduce costs of the transplant, which can reach several hundred thousand dollars, several U.S. cancer centers in the last 20 years pursued an outpatient option.

Since then, research published in the journal Nature has shown that infection rates and outcomes do not vary significantly if they are treated as inpatients or outpatients.

"We have patients who really don't need to be (in the hospital), they're as bored as can be," said Fran Poglajen, administrative director of nursing for hematology/oncology at SLU.

Stronger patients at low risk of transplant rejection will now have the option of going home each night, as long as they have a caregiver available 24 hours a day. If they develop a fever or other complications, they need to be admitted to the hospital.

The outpatient treatments can last two to 10 hours and are given each day for about a month.

The $3 million center at SLU Hospital includes 16 rooms in about 10,000 square feet. It was built on the site of the operating rooms of the former Bethesda Hospital. About 10 new jobs were created with the opening, and within a few years about 100 patients a year are expected to receive transplants there.

"Bone marrow transplant really has revolutionized treatment of malignant blood diseases," said Dr. Friedrich Schuening, SLU's director of hematology and oncology. Schuening ran the inpatient/outpatient bone marrow transplant center at Vanderbilt University before coming to St. Louis last year.

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SLU to open outpatient bone marrow transplant center

STOCKHOLM (Reuters) - A British and a Japanese scientist won the Nobel Prize for Medicine on Monday for work on creating stem cells, opening the door to new methods to diagnose and treat diseases.

Briton John Gurdon and Japan's Shinya Yamanaka equally share the prize of 8 million crowns ($1.2 million), the Nobel Assembly at Sweden's Karolinska Institute said in a statement.

"These groundbreaking discoveries have completely changed our view of the development and specialization of cells."

The discovery offered a new way to create stem cells with the ability to become different types of tissue by effectively turning back the clock on adult cells, restoring them to a so-called "pluripotent" state.

The practical result can be that skin cells can be obtained from ill people to find out more about their diseases and develop new therapies.

Medicine is the first of the Nobel prizes awarded each year. Prizes for achievements in science, literature and peace were first awarded in 1901 in accordance with the will of dynamite inventor and businessman Alfred Nobel. ($1 = 6.5846 Swedish crowns)

(Editing by Patrick Lannin, Alistair Scrutton and Mark Heinrich)

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Japanese, UK scientists win Nobel medicine prize for work with stem cells

10/11/2012 10:05 JAPAN Nobel Prize for Yamanaka, scientific research and ethics must go hand in hand by Pino Cazzaniga Research on iPS (induced pluripotent stem cells) can produce stem cells from adult cells, for use in regenerative medicine. Shinya Yamanakas discovery reveals that research on embryonic stem cells is unnecessary, saving the lives of many embryos. The Japanese researcher has searched for new ways driven by ethical question.

Tokyo (AsiaNews) - Shinya Yamanaka, fresh from the Nobel Prize for medicine, states that science and ethics must go hand in hand. Interviewed by the Mainichi Shimbun after the award, he said: "I would like to invite ethical experts as teachers at my laboratory and work to guide iPS [induced pluripotent stem] cell research from that direction as well. The work of a scientific researcher is just one part of the equation. "

Yamanaka, 50, found that adult cells can be transformed into cells in their infancy, stem cells (iPS), which are, so to speak, the raw material for the reconstruction of tissue irreparably damaged by disease. For regenerative medicine the implications of Yamanaka's discovery are obvious. Adult skin cells can for example be reprogrammed and transformed into any other cell that is desired: from the skin to the brain, from the skin to the heart, from the skin to elements that produce insulin.

"Their discovery - says the statement of the jury that awarded him the Nobel Prize on October 8 - has revolutionized our understanding of how cells and organisms develop. Through the programming of human cells, scientists have created new opportunities for the study of diseases and development of methods for the diagnosis and therapy ".

These "opportunities" are not only "scientific", but also "ethical". Much of the scientific research and global investment is in fact launched to design and produce stem cells from embryos, arriving at the point of manipulating and destroying them, facing scientists with enormous ethical problems.

" Ethics are really difficult - Yamanaka explainsto Mainichi - In the United States I began work on mouse experiments, and when I returned to Japan I learned that human embryonic stem cells had been created. I was happy that they would contribute to medical science, but I faced an ethical issue. I started iPS cell research as a way to do good things as a researcher, and I wanted to do what I could to expand the merits of embryonic stem cells. If we make sperm or eggs from iPS cells, however, it leads to the creation of new life, so the work I did on iPS cells led to an ethical problem. If we don't prepare debates for ethical problems in advance, technology will proceed ahead faster than we think.. "

The "ethical question" Yamanaka pushed to find a way to "not keep destroying embryos for our research."

Speaking with his co-workers at the University of Kyoto, immediately after receiving the award, Yamanaka showed dedication and modesty.

"Now - he said - I strongly feel a sense of gratitude and responsibility" gratitude for family and friends who have supported him in a demanding journey of discovery that lasted decades; responsibility for a discovery that gives hope to millions of patients. Now iPS cells can grow into any tissue of the human body allowing regeneration of parts so far irretrievably lost due to illness.

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10/11/2012 10:05 JAPAN Nobel Prize for Yamanaka, scientific research and ethics must go hand in hand

WASHINGTON, Oct. 10, 2012 /PRNewswire-USNewswire/ --Alliance Defending Freedom and the Jubilee Campaign together with Tom Hungar of Gibson, Dunn & Crutcher today filed a petition for certiorari with the U.S. Supreme Court in the case Sherley v. Sebelius, which seeks to end federal funding of human embryonic stem cell research.

Of the petition David Prentice, Ph.D., senior fellow for life sciences at the Family Research Council's Center for Human Life and Bioethics, made the following comments:

"Even as the Nobel Prize committee honors Japanese scientist Shinya Yamanaka for introducing ethical induced pluripotent stem (iPS) cells to the field of medicine, the Obama administration is fighting to continue wasting taxpayer money on unethical embryonic stem cell research, which relies on the destruction of young human life. A plain reading of federal law would specifically prohibit funding of embryonic stem cell research. After years of wasting taxpayer dollars as well as lives on ethically-tainted experiments, it's time for the federal government to start putting that money into lifesaving and ethical adult stem cell research, the gold standard for patient treatments. Such research is saving thousands of lives now lives like that of Chloe Levine who beat cerebral palsy with the help of adult stem cells. Each precious life at every stage and every age deserves our respect, and we should devote our resources and time to the ethical stem cell research that has the best chance of preserving life adult stem cells.

"We are pleased to see this suit move forward, and hope that the Supreme Court will agree to its review and uphold the clear intent of federal law to protect human life from experimentation."

To watch a video about Chloe Levine and adult stem cell therapy, click here : http://www.youtube.com/watch?feature=player_embedded&v=ojjT4yRd5Es

To learn more about adult stem cells, click here : http://www.stemcellresearchfacts.org/

SOURCE Family Research Council

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FRC Supports Alliance Defending Freedom, Jubilee Campaign Cert Petition to Supreme Court on Stem Cell Funding

The Nobel Prize for Physiology or Medicine was announced on Monday. The award this year went to Sir John B. Gurdon and Dr. Shinya Yamanaka. The two men were awarded the Nobel Prize jointly, for their individual work in cloning and stem cell research.

Monday's recognition marked the awarding of the first Nobel Prize for 2012. The rest of the Nobel Prize recipients will be announced throughout the next two weeks.

Here is some of the key information regarding Gurdon and Yamanaka's work and Monday's Nobel Prize announcement.

* Yamanaka and Gurdon did not work together or present shared research, even though they both concentrate their studies on a similar area of research.

* Gurdon is actually being honored for work he did back in 1962. According to a New York Times report, he was the first person to clone an animal, a frog, opening the door to further research into stem cells and cloning.

* Gurdon was able to produce live tadpoles from the adult cells of a frog, by removing the nucleus of a frog's egg and putting the adult cells in its place.

* This "reprogramming" by Gurdon laid the groundwork for Yamanaka's work four decades later. Yamanaka's work, which dates back only six years, to 2006, focused on the mechanisms behind Gurdon's results.

* According to the Los Angeles Times, Yamanaka was sharply criticized at first for his own work, in which he sought to discover how cells are able to reprogram themselves the way that Gurdon's work first suggested that they could.

* Ultimately, Yamanaka was able to isolate just four cells that were needed in order to be able to reprogram other cells back to an embryonic state, allowing them to be manipulated into developing into any particular kind of cell that was needed. These cells have now been dubbed "induced pluripotent stem cells," or iPS cells, according to reports by CNN and other media outlets.

* Scientists are reproducing Yamanaka's technique in their own labs to be able to replicate disease cells, like those of Alzheimer's or Parkinson's, in order to study them and even to test the effects of potential new treatments.

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Nobel Prize for Physiology or Medicine Goes to Stem Cell Researchers

NEW YORK, NY--(Marketwire - Oct 11, 2012) - Immunovative, Inc. ("IMUN" or the "Company") ( OTCBB : IMUN ) has today announced that Immunovative Therapies, Ltd. ("ITL") has been granted a U.S. Patent entitled "METHOD FOR ALLOGENEIC CELL THERAPY," which was issued September 25, 2012, under Patent No. 8,273,377. Foreign versions of this patent are pending around the world. This patent covers the proprietary method that utilizes immune cells from a normal donor to elicit an anti-tumor mechanism that mimics the Graft vs. Tumor (GVT) effect of non-myeloablative allogeneic stem cell transplants ("Mini-Transplant") without the toxicity of Graft vs. Host Disease (GVHD). Harnessing the power of the immune system to treat cancer and infectious disease has long been the goal of physicians and scientists. Unfortunately, cancer vaccines and cell immunotherapy methods have had difficulties in translating the promise of immune control into effect treatments. The most effective anti-cancer mechanism ever discovered is the GVT immune response that occurs after Mini-Transplant procedures. This mechanism can completely destroy chemotherapy-resistant metastatic cancers. Unfortunately, the clinical use of the GVT effect is severely limited due to extreme toxicity of an intimately related GVHD effect. Mini-Transplants are thus only widely used in advanced cases of leukemia, even though the GVT effect has been shown capable of killing many types of solid tumors. The separation of the beneficial GVT effect from the devastating GVHD toxicity has long been the goal of stem cell transplant scientists and is the subject of extensive research around the world.

ITL is believed to be the first to develop an immunotherapy drug product (AlloStim) which enables the harnessing of the power of the GVT mechanism without GVHD side effects. ITL calls the mechanism which enables immune-mediated tumor destruction without GVHD toxicity the "Mirror Effect." The "Mirror Effect" mechanism represents a major breakthrough for treatment of cancer and infectious disease. Early human clinical trials have produced evidence of this technology's capability to stimulate the immune systems of heavily pre-treated metastatic cancer patients to kill widely disseminated metastatic cancers. A potentially pivotal, double-blind, placebo-controlled Phase II/III clinical trial in metastatic breast cancer is being prepared to document these effects in a controlled setting and determine if the immune-mediated tumor debulking provides patients with a survival advantage. This issued US Patent covers the use of intentionally mismatched, activated immune cells for treatment of cancer and infectious diseases. The patent discloses the concepts and methods related to ITL's proprietary "Mirror Effect" technology and describes its lead immunotherapy drug candidate "AlloStim." This patent also describes how AlloStim eliminates the need for a matched tissue donor and chemotherapy pre-conditioning for patients that require a bone marrow or stem cell transplant.

The newly issued patent is part of an intellectual property portfolio from ITL that includes 11 issued patents and numerous patent applications, to which IMUN has exclusive rights in the US and the rest of the world. The licensed patents cover compositions, methods of production, formulation, distribution and uses for treatment of all types of cancer and infectious diseases.

Seth M. Shaw, CEO of IMUN, stated: "The separation of the beneficial GVT effect from the devastating GVHD toxicity has been called the 'Holy Grail' of transplant research. ITL is the first to accomplish this significant scientific milestone. We are confident that ITL's extensive Intellectual Property ("IP") portfolio will provide our products with long-term market exclusivity. This patent is an important component of our growing IP estate, as the allowed claim language is very broad. We are now the exclusive allogeneic cell therapy company in the world. Our strong patent portfolio will now allow us to pursue opportunities for partnering and sub-licensing by indication and territory around the world."

Dr. Michael Har-Noy, CEO, founder of ITL and inventor of the "Mirror Effect" technology stated: "Our patent portfolio is a valuable asset as it not only protects our AlloStim and AlloVax product candidates, but also provides protection of the unique mechanism of action that enables these products to have such powerful potential to debulk treatment-resistant metastatic disease. We are continuing to invest in research activities to improve our current product candidates and develop new products and further expand our patent portfolio. With protection of the novel mechanism of action, ITL and IMUN have the basis for development of a new industry based on powerful, non-toxic immunotherapy products that can work where all current treatment options have failed."

About Immunovative, Inc.: On December 12th, 2011, Immunovative, Inc. ("IMUN") signed an exclusive License Agreement (the "License Agreement") with Immunovative Therapies, Ltd. ("ITL"). Under the terms of the License Agreement, IMUN has been granted an exclusive, worldwide license to commercialize any products covered under ITL's current issued and pending patent application portfolio, as well as the rights to any future patent applications, including improvements or modifications to the existing applications and any corresponding improvements or new versions of the existing products. Please visit IMUN's website at http://www.imun.com.

About Immunovative Therapies, Ltd.:

Immunovative Therapies, Ltd. is an Israeli biopharmaceutical company that was founded in May 2004 with financial support from the Israeli Office of the Chief Scientist. ITL is a graduate of the Misgav Venture Accelerator, a member of the world-renowned Israeli technological incubator program. The company was the Misgav Venture Accelerator's candidate for the prize for the outstanding incubator project of 2006, awarded by the Office of the Chief Scientist. ITL specializes in the development of novel immunotherapy drug products that incorporate living immune cells as the active ingredients for treatment of cancer and infectious disease. Please visit ITL's website at: http://www.immunovative.co.il

DISCLAIMER: Forward-Looking Statements: Except for statements of historical fact, this news release contains certain "forward-looking statements" as defined by the Private Securities Litigation Reform Act of 1995, including, without limitation, expectations, beliefs, plans and objectives regarding the development, use and marketability of products. Such forward-looking statements are based on present circumstances and on IMUN's predictions with respect to events that have not occurred, that may not occur, or that may occur with different consequences and timing than those now assumed or anticipated. Such forward-looking statements involve known and unknown risks, uncertainties and other factors, and are not guarantees of future performance or results and involve risks and uncertainties that could cause actual events or results to differ materially from the events or results expressed or implied by such forward-looking statements. Such factors include general economic and business conditions, the ability to successfully develop and market products, consumer and business consumption habits, the ability to fund operations and other factors over which IMUN has little or no control. Such forward-looking statements are made only as of the date of this release, and IMUN assumes no obligation to update forward-looking statements to reflect subsequent events or circumstances. Readers should not place undue reliance on these forward-looking statements. Risks, uncertainties and other factors are discussed in documents filed from time to time by IMUN with the Securities and Exchange Commission.

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Immunovative, Inc. Announces Issuance of U.S. Patent on Key Scientific Breakthrough

NEW YORK, Oct. 10, 2012 (GLOBE NEWSWIRE) -- NeoStem, Inc. (NBS), an emerging leader in the fast growing cell therapy market, announced today that a new article published by the International Scholarly Research Network provides further evidence that AMR-001, NeoStem's lead product candidate through its Amorcyte subsidiary, appears capable of preserving heart muscle function following a large myocardial infarction. Amorcyte demonstrated in its Phase 1 trial that AMR-001 preserved heart muscle function when a therapeutic dose of cells was administered. No patient experienced a deterioration in heart muscle function who received 10 million cells or more whereas 30 to 40 percent of patients not receiving a therapeutic dose did. The new study shows that cardiac muscle function sparing effects are evident even earlier after treatment than previously shown.

The article titled "Assessment of myocardial contractile function using global and segmental circumferential strain following intracoronary stem cell infusion after myocardial infarction: MRI Feature Tracking Feasibility Study" by Sabha Bhatti, MD, et al. appears in ISRN Radiology Volume 2013, Article ID 371028 and is published online at http://www.isrn.com/journals/radiology/2013/371028. The publication by Dr. Bhatti and colleagues, including Dr. Andrew Pecora, Chief Medical Officer of NeoStem, supports the finding that AMR-001 preserves heart function. Previously, Amorcyte, a NeoStem subsidiary, showed that six months after STEMI AMR-001 improved blood flow to the heart and preserved heart muscle. By using cardiac magnetic resonance imaging, specifically measuring circumferential strain of the left ventricle, the authors show that AMR-001's effects are evident by three months after STEMI.

AMR-001's angiogenic and anti-apoptotic mechanisms of action indicate that preservation of heart muscle function should start within weeks and be evident in fewer than 6 months. This publication, based on blinded analysis of Amorcyte's Phase 1 data, confirms the expected time course for AMR-001's mechanism of action. In the context of previously published results, these effects are durable.

Amorcyte is developing AMR-001, a cell therapy for the treatment of cardiovascular disease, and is enrolling patients in a Phase 2 trial to investigate AMR-001's efficacy in preserving cardiac function and preventing adverse clinical events after a large myocardial infarction.

About NeoStem, Inc.

NeoStem, Inc. continues to develop and build on its core capabilities in cell therapy, capitalizing on the paradigm shift that we see occurring in medicine. In particular, we anticipate that cell therapy will have a significant role in the fight against chronic disease and in lessening the economic burden that these diseases pose to modern society. We are emerging as a technology and market leading company in this fast developing cell therapy market. Our multi-faceted business strategy combines a state-of-the-art contract development and manufacturing subsidiary, Progenitor Cell Therapy, LLC ("PCT"), with a medically important cell therapy product development program, enabling near and long-term revenue growth opportunities. We believe this expertise and existing research capabilities and collaborations will enable us to achieve our mission of becoming a premier cell therapy company.

Our contract development and manufacturing service business supports the development of proprietary cell therapy products. NeoStem's most clinically advanced therapeutic, AMR-001, as mentioned above, is being developed at Amorcyte, LLC ("Amorcyte"), which we acquired in October 2011. Amorcyte is developing a cell therapy for the treatment of cardiovascular disease and is enrolling patients in a Phase 2 trial to investigate AMR-001's efficacy in preserving heart function after a heart attack. Athelos Corporation ("Athelos"), which is approximately 80%-owned by our subsidiary, PCT, is collaborating with Becton-Dickinson in the early clinical exploration of a T-cell therapy for autoimmune conditions. In addition, pre-clinical assets include our VSELTM Technology platform as well as our mesenchymal stem cell product candidate for regenerative medicine. Our service business and pipeline of proprietary cell therapy products work in concert, giving us a competitive advantage that we believe is unique to the biotechnology and pharmaceutical industries. Supported by an experienced scientific and business management team and a substantial intellectual property estate, we believe we are well positioned to succeed.

Forward-Looking Statements for NeoStem, Inc.

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements reflect management's current expectations, as of the date of this press release, and involve certain risks and uncertainties. Forward-looking statements include statements herein with respect to the successful execution of the Company's business strategy, including with respect to the Company's or its partners' successful development of AMR-001 and other cell therapeutics, the size of the market for such products, its competitive position in such markets, the Company's ability to successfully penetrate such markets and the market for its CDMO business, and the efficacy of protection from its patent portfolio, as well as the future of the cell therapeutics industry in general, including the rate at which such industry may grow. Forward looking statements also include statements with respect to satisfying all conditions to closing the disposition of Erye, including receipt of all necessary regulatory approvals in the PRC. The Company's actual results could differ materially from those anticipated in these forward- looking statements as a result of various factors, including but not limited to (i) the Company's ability to manage its business despite operating losses and cash outflows, (ii) its ability to obtain sufficient capital or strategic business arrangement to fund its operations, including the clinical trials for AMR-001, (iii) successful results of the Company's clinical trials of AMR-001 and other cellular therapeutic products that may be pursued, (iv) demand for and market acceptance of AMR-001 or other cell therapies if clinical trials are successful and the Company is permitted to market such products, (v) establishment of a large global market for cellular-based products, (vi) the impact of competitive products and pricing, (vii) the impact of future scientific and medical developments, (viii) the Company's ability to obtain appropriate governmental licenses and approvals and, in general, future actions of regulatory bodies, including the FDA and foreign counterparts, (ix) reimbursement and rebate policies of government agencies and private payers, (x) the Company's ability to protect its intellectual property, (xi) the company's ability to successfully divest its interest in Erye, and (xii) matters described under the "Risk Factors" in the Company's Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 20, 2012 and in the Company's other periodic filings with the Securities and Exchange Commission, all of which are available on its website. The Company does not undertake to update its forward-looking statements. The Company's further development is highly dependent on future medical and research developments and market acceptance, which is outside its control.

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NeoStem Announces New Publication That Supports Positive Results of AMR-001 for Treatment of AMI

LA JOLLA, Calif., Oct. 10, 2012 /PRNewswire/ --New research directions are being explored to find therapies for hard to treat diseases. One exciting new approach is the use of autologous Adult Stem Cells. Multiple Sclerosis (MS) is one of the many notable diseasesadult stem cell therapycould potentially impact. Multiple Sclerosis (MS) is a disorder in which an individual's own immune system attacks the 'myelin sheath'. The myelin sheath serves to protect the nerve cells within the body's central nervous system (CNS). The damage caused by MS may result in many types of symptoms including:

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Currently there is no cure for MS, but MS stem cell therapiesattempt to slow the disease's progression and limit symptoms. Since adult stem cells have the ability to differentiate into many different types of cells, such as those required for proper functioning and protection of nerve cells, the use of adult stem cells for MS therapy could be of substantial value. Adult stem cells can be isolated with relative ease from an individual's own 'adipose' (fat) tissue. As a result, adult stem cell therapy is not subject to the ethical or religious issues troubling embryonic methods.

Encouragingly for MS treatment potential, scientific researchers have been studying the properties of adipose-derived stem cells. Their results from canine and equine studies suggest anti-inflammatory and regenerative roles for these stem cells. Also, further research findings suggest these adipose-derived stem cells can have specific immune-regulating properties. Markedly, clinical-based work conducted overseas has indicated that individuals suffering from MS could respond well to adipose-derived stem cell treatment, with a substantially improved quality of life.

The US based company, StemGenex, is pioneering new methods for using adipose derived adult stem cells to help in diseases with limited treatment options like MS. StemGenex has been conducting research with physicians over the last 5 years to advance adult stem cell treatment protocols for alleviating MS symptoms. StemGenex's proprietary protocol includes the use of a double activation process, which increases both the viability and the quantity of stem cells that are received in a single application.

To find out more about stem cell treatments contact StemGenex either by phone at 800.609.7795 or email at Contact@StemGenex.com.

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StemGenex™ on Adult Stem Cell-Based Therapy for Multiple Sclerosis

Kyoto University Professor Shinya Yamanaka talks with Japan's Prime Minister Yoshihiko Nada by a mobile phone during a news conference in Kyoto, western Japan, in this photo taken by Kyodo October 8, 2012.

By Tan Ee Lyn Reuters Wednesday, Oct 10, 2012

HONG KONG - The Internet is full of advertisements touting stem cell cures for just about any disease -- from diabetes, multiple sclerosis, arthritis, eye problems, Alzheimer's and Parkinson's to spinal cord injuries -- in countries such as China, Mexico, India, Turkey and Russia.

Yamanaka, who shared the Nobel Prize for Medicine on Monday with John Gurdon of the Gurdon Institute in Cambridge, Britain, called for caution.

"This type of practice is an enormous problem, it is a threat. Many so-called stem cell therapies are being conducted without any data using animals, preclinical safety checks," said Yamanaka of Kyoto University in Japan.

"Patients should understand that if there are no preclinical data in the efficiency and safety of the procedure that he or she is undergoing ... it could be very dangerous," he told Reuters in a telephone interview.

Yamanaka and Gurdon shared the Nobel Prize for the discovery that adult cells can be transformed back into embryo-like stem cells that may one day regrow tissue in damaged brains, hearts or other organs.

"I hope patients and lay people can understand there are two kinds of stem cell therapies. One is what we are trying to establish. It is solely based on scientific data. We have been conducting preclinical work, experiments with animals, like rats and monkeys," Yamanaka said.

"Only when we confirm the safety and effectiveness of stem cell therapies with animals will we initiate clinical trials using a small number of patients."

Yamanaka, who calls the master stem cells he created "induced pluripotent stem cells" (iPS), hopes to see the first clinical trials soon.

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Nobel laureate Yamanaka warns of rogue "stemcell therapies"

A Japanese and a British scientist were awarded the 2012 Nobel Prize in physiology or medicine Monday for their groundbreaking work in turning adult cells into immature ones that might be tweaked further to treat a wide spectrum of diseases. Such research is being aggressively pursued at scientific institutions across San Diego County.

Shinya Yamanaka of Japan and John Gurdon of Great Britain showed that it is possible to alter adult cells to the point where they are very similar to human embryonic stem cells. But the process does not involved the destruction of embryos.

In essence, scientists can now take cells from, say, a person's skin and turn back the clock, making the cell essentially act as though it were new.

The Nobel Assembly at the Karolinska Institute issued a statement today saying, "These groundbreaking discoveries have completely changed our view of the development and cellular specialisation. We now understand that the mature cell does not have to be confined forever to its specialised state. Textbooks have been rewritten and new research fields have been established. By reprogramming human cells, scientists have created new opportunities to study diseases and develop methods for diagnosis and therapy.

"The discoveries of Gurdon and Yamanaka have shown that specialised cells can turn back the developmental clock under certain circumstances. Although their genome undergoes modifications during development, these modifications are not irreversible. We have obtained a new view of the development of cells and organisms.

"Research during recent years has shown that iPS cells can give rise to all the different cell types of the body. These discoveries have also provided new tools for scientists around the world and led to remarkable progress in many areas of medicine. iPS cells can also be prepared from human cells.

"For instance, skin cells can be obtained from patients with various diseases, reprogrammed, and examined in the laboratory to determine how they differ from cells of healthy individuals. Such cells constitute invaluable tools for understanding disease mechanisms and so provide new opportunities to develop medical therapies."

Gurdon -- who was working in his lab today when he learned that he'd won a Nobel -- made the initial breakthrough about 50 years ago, and Yamanaka built on that work, accelerating the process through genetic engineering.

The Sanford-Burnham Medical Research Institute was created in La Jolla, in part, to probe exactly this area of research.

Will La Jolla scientists win this year's Nobel Prizes?

Link:
Nobel Prize awarded for work on stem cells

Kyodo / Reuters

Kyoto University Professor Shinya Yamanaka (left) and John Gurdon of the Gurdon Institute in Cambridge, England, at a symposium on induced pluripotent stem cells in Tokyo in April 2008

In a testament to the revolutionary potential of the field of regenerative medicine, in which scientists are able to create and replace any cells that are at fault in disease, the Nobel Prize committee on Monday awarded the 2012 Nobel in Physiology or Medicine to two researchers whose discoveries have made such cellular alchemy possible.

The prize went to John B. Gurdon of the University of Cambridge in England, who was among the first to clone an animal, a frog, in 1962, and to Shinya Yamanaka of Kyoto University in Japan who in 2006 discovered the four genes necessary to reprogram an adult cell back to an embryonic state.

Sir John Gurdon, who is now a professor at an institute that bears his name, earned the ridicule of many colleagues back in the 1960s when he set out on a series of experiments to show that the development of cells could be reversed. At the time, biologists knew that all cells in an embryo had the potential to become any cell in the body, but they believed that once a developmental path was set for each cell toward becoming part of the brain, or a nerve or muscle it could not be returned to its embryonic state. The thinking was that as a cell developed, it would either shed or silence the genes it no longer used, so that it would be impossible for a cell from an adult animal, for example, to return to its embryonic state and make other cells.

(MORE: Stem Cell Miracle? New Therapies May Cure Chronic Conditions Like Alzheimers)

Working with frogs, Gurdon proved his critics wrong, showing that some reprogramming could occur. Gurdon took the DNA from a mature frogs gut cell and inserted it into an egg cell. The resulting egg, when fertilized, developed into a normal tadpole, a strong indication that the genes of the gut cell were amenable to reprogramming; they had the ability to function as more than just an intestinal cell, and could give rise to any of the cells needed to create an entirely new frog.

Just as Gurdon was facing his critics in England, a young boy was born in Osaka, Japan, who would eventually take Gurdons finding to unthinkable extremes. Initially, Shinya Yamanaka would follow his fathers wishes and become an orthopedic surgeon, but he found himself ill-suited to the surgeons life. Intrigued more by the behind-the-scenes biological processes that make the body work, he found himself drawn to basic research, and began his career by trying to find a way to lower cholesterol production. That work also wasnt successful, but it drew him to the challenge of understanding what makes cells divide, proliferate and develop in specific ways.

In 2006, while at Kyoto University, Yamanaka stunned scientists by announcing he had successfully achieved what Gurdon had with the frog cells, but without using eggs at all. Yamanaka mixed four genes in with skin cells from adult mice and turned those cells back to an embryo-like state, essentially erasing their development and turning back their clock. The four genes reactivated other genes that are prolific in the early embryo, and turned off those that directed the cells to behave like skin.

(MORE: Ovary Stem Cells Can Produce New Human Eggs)

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Stem Cell Scientists Awarded Nobel Prize in Physiology and Medicine

The techniques pioneered by the winners of this years Nobel Prize in medicine, John B. Gurdon and Shinya Yamanaka, have already allowed scientists to generate stem cells and clone animals.

But it is the potential these discoveries hold that truly boggles the mind. If stem cells the primitive cells that develop into tissue like skin, blood, nerves, muscle and bone can be harnessed, the belief is they can be used as a repair kit for the body.

In theory, a few skin cells could be harvested to rebuild a spinal cord damaged by trauma, to replace brain cells destroyed by dementia, to rebuild heart muscle damaged by a heart attack or to grow a new limb ravaged by diabetes. It is the stuff of science fiction, so close we can taste it.

But these dreams of miracle cures must be tempered with a strong dose of realism.

Despite billions of dollars in investment in research, from government agencies and biotech companies, there is little evidence that stem cell therapies work.

Yes, some hearing has been restored in gerbils and there have been modest improvements in paralyzed lab rats using stem cell treatments, but these are baby steps. In humans, the gains have been far more modest.

We can treat some forms of cancer, like leukemia and multiple myeloma, with stem cell transplants. But this is simply a refinement of an earlier technique, bone marrow transplant. And to perform such a transplant, the immune system must, for all intents and purposes, be destroyed a punishing regime with a significant mortality rate.

It is a far cry from the notion of an injection of magic stem cells that allow people to walk again or restore their memories.

The International Society for Stem Cell Research says that while there are hundreds of conditions that can purportedly be treated with stem cells, the treatments that have actually been shown to be beneficial are extremely limited. Aside from the cancer treatments mentioned above, some bone, skin and corneal conditions have been treated by grafting stem cells, growing them in the lab and transplanting them.

But in all these cases, the stem cells are tissue-specific, meaning the cells are carrying out a function they were designed to do. This is very different from the notion that undifferentiated stem cells can be used to treat a broad range of conditions.(And we wont delve into potential problems, such as rejection and the concern that stem cells could grow out of control and cause cancerous tumours.)

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Stem cell therapy a miracle cure? Not quite yet

ROCKVILLE, Md., Oct. 9, 2012 /PRNewswire/ --Neuralstem, Inc. (NYSE Amex: CUR) announced that Eva Feldman, MD, PhD, principal investigator of the Phase I trial to test Neuralstem's NSI-566 spinal cord stem cells in the treatment of amyotrophic lateral sclerosis (ALS or Lou Gehrig's disease), updated data on the trial at the American Neurological Association annual meeting in Boston, MA, yesterday. (http://www.aneuroa.org/i4a/pages/index.cfm?pageid=3311). Dr. Feldman, who is President of the American Neurological Association, presented interim results on all 18 procedures in 15 patients, including the last three patients from earlier cohorts who received second procedures. The trial will conclude six months after the last patient was treated, which was in August.

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"This has been a very successful trial so far," said Dr. Feldman, Director of the A. Alfred Taubman Medical Research Institute and Director of Research of the ALS Clinic at the University of Michigan Health System. "With the transplantation of these neural stem cells, we are exploring a paradigm shift in the treatment of ALS. We have demonstrated that intraspinal transplantation is feasible and well-tolerated. Although this phase of the trial was not powered to demonstrate efficacy, we appear to have interrupted the progression of the disease in one subgroup of patients. We are anxious to move to future trial phases to examine therapeutic efficacy." Dr. Feldman is an unpaid consultant to Neuralstem.

"The purpose of this trial was to assess the safety of both the intraspinal transplantation procedure, the first in the world, and of the cells themselves, " said Karl Johe, PhD, Chairman of the Board and Chief Scientific Officer of Neuralstem, Inc. "All assessments show both to be safe. Additionally, we believe we are seeing evidence of a treatment effect in some patients over a sustained period of time. We need now to move forward to more advanced, larger trials to increase the dosage and more effectively look at possible efficacy."

About the Trial

The Phase I trial to assess the safety of Neuralstem's NSI-566 spinal cord neural stem cells and intraspinal transplantation method in ALS patients commenced in January 2010, and consisted of 18 treatments in 15 patients. The trial was designed to follow a risk escalation paradigm. The first 12 patients were each transplanted in the lumbar (lower back) region of the spine, beginning with non-ambulatory and advancing to ambulatory cohorts.

The trial then advanced to transplantation in the cervical (upper back) region of the spine. The first cohort of three was treated in the cervical region only. In an amendment to the trial design, The Food and Drug Administration (FDA) approved the return of previously-treated patients to this cohort. Consequently, the last cohort of three patients received injections in the cervical region in addition to the lumbar injections they had received earlier. All injections delivered 100,000 cells, for a dosing range of up to 1.5 million cells. The last patient was treated in August, 2012. The entire trial concludes six months after the final surgery.

About Neuralstem

Neuralstem's patented technology enables the ability to produce neural stem cells of the human brain and spinal cord in commercial quantities, and the ability to control the differentiation of these cells constitutively into mature, physiologically relevant human neurons and glia. Neuralstem has recently treated the last patient in an FDA-approved Phase I safety clinical trial for amyotrophic lateral sclerosis (ALS), often referred to as Lou Gehrig's disease, and has been awarded orphan status designation by the FDA.

In addition to ALS, the company is also targeting major central nervous system conditions with its NSI-566 cell therapy platform, including spinal cord injury, ischemic stroke and glioblastoma (brain cancer). The company has submitted an IND (Investigational New Drug) application to the FDA for a Phase I safety trial in spinal cord injury.

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Dr. Eva Feldman, Principal Investigator, Updates Interim Data On Completed Neuralstem ALS Phase I Trial

ORLANDO, Fla., Oct. 9, 2012 /PRNewswire/ --Vanderson Rocha, M.D., Ph.D., recognizedthroughout the world as a respected leader in the field of cord blood stem cell transplantation, hasjoined the team at CORD:USE Cord Blood Bank. Dr. Rocha's extensive experience and knowledge in transplant medicine and stem cell biology will provide a significant contribution to CORD:USE. "We're excited and honored to have Dr. Rocha, an internationally acclaimed expert in cord blood stem cell transplantation, as a member of our highly esteemed team,"said Edward Guindi MD, President and CEO of CORD:USE.

Dr. Rocha is a professor of Hematology and the Director of the Bone Marrow Transplant Unit at the University of Oxford, UK. He also serves as the Director of the Bone Marrow Transplant Unit, Hospital Sirio Libanes and Children's Hospital of the University of Sao Paulo, Brazil. He is the Scientific Director of the Eurocord Project and is on the Editorial Board of Bone Marrow Transplantation. Dr. Rocha is an internationally renowned speaker regarding the use of unrelated and related hematopoietic stem cells in transplants. He has published more than 200 papers in the New England Journal of Medicine, Blood, Lancet, Journal of Clinical Oncology, British Journal of Hematology, and other peer reviewed publications.

Dr. Rocha continues to contribute significantly to the development and refinement of the therapeutic applications of cord blood stem cells. Due to his expertise, he was elected by the European Transplant Centers as Chairman of the Acute Leukemia Working Party of the European Group for Blood and Marrow Transplantation (EBMT) from 2004 to 2010.

"I am very honored to be a member of the distinguished team at CORD:USE which includes my colleagues who are pioneers in cord blood science, banking and transplantation. I look forward to continuing to work with them to advance the use of cord blood transplantation to treat many more patients in the future," said Dr. Rocha.

Dr. Rocha joins otherhighly respected leaders and pioneers in the field of cord blood stem cell transplantation on the CORD:USE team:

About CORD:USE Cord Blood Bank, Inc.

CORD:USE operates leading public and family cord blood banks. CORD:USE Public Cord Blood Bank is one of the high quality cord blood banks selected and funded by HRSA of the U.S. Department of Health and Human Services to help build the National Cord Blood Inventory (NCBI). CORD:USE Cord Blood Bank has entered into agreements with hospitalsacross the country to provide mothers the option to donate their babies' cord blood. CORD:USE cord blood units are listed in the NCBI through the National Marrow Donor Program's Registry and are distributed to transplanters, throughout the country and the world. CORD:USE Family Cord Blood Bank protects family banked cord blood units utilizing similar high-quality cord blood banking practices and technologies that are used in our leading public cord blood bank in its state-of-the-art laboratory. For more information, please visit our website http://www.corduse.com, or contact Michael Ernst at 407.667.3000.

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CORD:USE Cord Blood Bank is proud to announce the addition of Cord Blood Stem Cell Transplantation Expert, Dr ...

Imagine the horror of a soldier losing a limb on the battlefield, or a loved one having a body part amputated due to diabetes. But, what if they could restore their limbs by activating their stem cells?

New Mexico State University biologist Graciela Unguez and a team of researchers found that electric fish, a vertebrate animal just like humans, can regenerate their tails following amputation after activating their stem cells. The findings were published in the May 2012 edition of the scientific journal, PLOS One.

"What's surprising is that as humans, we're one of the few animal species that do not readily regenerate limbs, organs or most tissues," Unguez said. "So, there's a lot of interest in how these fish do it, and what's preventing us from doing it."

Regeneration is the process of restoring lost cells, tissues or organs. According to Unguez, most animals have the ability to regenerate eyes and tails and some animals may be able to regenerate up to half of their bodies.

The researchers discovered that when they cut off up to one third of an electric fish's tail, including the spinal cord, vertebrae, muscles, skin, connective tissues and nerves, the fish would regenerate it. Unguez said the more tissue cut off, the longer the regeneration takes, but for the purpose of her study, it takes about three weeks.

"It's really exciting to us because, here's an example of an animal that can regenerate a lot of tissue types that are also found in humans," Unguez said. "So it puts into question this previous idea that those animals that can regenerate losses of many tissues do it because they do it differently than humans."

Unguez has used the electric fish as a model system to investigate the role that the nervous system plays in the fate of electrically excitable cells like muscle cells for 15 years. She noted that for many years, scientists have thought that highly regenerative animals use a mechanism of regeneration that does not involve stem cells, and this stem cell-based mechanism is well known in humans. In contrast, the stem cell-independent mechanism found in highly regenerative animals is not normally active in humans.

Unguez explained that stem cells are a small population of cells that do not mature and stay with us throughout our life, and then when called upon, they reenter the cell cycle to become muscle cells, neurons, skill cells and such.

But, what Unguez and her collaborators discovered was the opposite. The electric fish actually activated its own muscle and electric organ stem cells to regenerate. She said the adult fish regenerated unendingly with the activation of their stem cells.

"It does not negate other mechanisms, but it definitely showed that it was largely due to an activation of stem cells, just like humans have," Unguez said. "So maybe it's not as far apart, maybe some of the mechanisms involved or the events that need to be activated are more closely related than we thought."

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Electric fish at NMSU activate stem cells for regeneration